Idol Blue: Faceting Design Diagram

Beryl (Aquamarine, Emerald, Helidore, Bixbite, Goshenite, Morganite, Golden Beryl)

Idol Blue (MC96.JRG)
By Jeff R. Graham
Copyright 2002
87.8% Light Return
Angles for R.I. = 1.56
133 facets + 8 facets on girdle = 141
4-fold, mirror-image symmetry
64 index
L/W = 1.000 T/W = 0.510 T/L = 0.510 P/W = 0.586
C/W = 0.231 H/W = (P+C)/W+0.02 = 0.837 P/H = 0.700 C/H = 0.276 Vol./W^3 = 0.392

PAVILION

CROWN

Addition # 12 - Got a large piece of Beryl? This cuts easier than it looks. This obviously needs to be a large stone. Notice that the angles are not far apart on P5 and P6, just cut them to meet.

Detailed faceting instructions by Jeff Graham available at The Rock Peddler

Jeff R. Graham

The late Jeff Graham was a prolific faceter, creator of many original faceting designs, and the author of several highly-regarded instructional faceting books such as Gram Faceting Designs.

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